Canon iR1200 Series Service Manual page 475

Keypad
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G3 Signal Transmission Test (6-1: G3 4800 bps Tx)
A press on '1' on the keypad on the FACULTY TEST menu selects the G3 transmission test. In this test, a G3 signal
is transmitted using the telephone line terminal and the speaker at 4800 bps.
Sensor Test (6-3: SENSOR)
This mode is used to check the state of a specific sensor of the machine on the LCD. A press on '3' on the keypad
from the FACULTY TEST menu selects the sensor test. The LCD indication changes as the sensor goes ON and
OFF.
The paper leading edge sensor (PS102), LGL paper sensor (PS101), and delivery sensor (PS3) cannot be checked by
running a sensor test.
6-3:SENOR
[1] - - - [4]
Press '1' on the keypad.
Press '2' on the keypad.
Press '3' on the keypad.
Press '4' on the keypad.
Item
ESS Test
DS of DES of DDS of
CRG on DCVS on
DS: original sensor*1 (PS6); 'on' if present, 'of' if absent.
DES: registration sensor*1 (PS7); 'on' if present, 'of' if absent.
DDS: original delivery sensor*1(PS8);'on' if present, 'of' if absent.
CRG: not used
DCVS: Reader unit slide detecting switch (SW1) and toner supply cover open/closed detecting switch (SW2):
'on' reader unit in position and toner supply cover closed,
'of' reader unit not in position or toner supply cover open.
*1: indicates the state of a specific sensor of the ADF.
HPS on BCVS of
TBS on WTS of
HPS: contact sensor home position sensor (PS1):
'on' contact sensor in home position,
'of' contact sensor not in home position.
BCVS: ADF (copyboard cover) open/close sensor (PS2); 'on' cover open, 'of' cover closed.
TBS: toner bottle sensor (PS11):
'on' toner bottle fitted,
'of' toner bottle not fitted (cartridge not fitted).
WTS: waste toner full sensor (PS12):
'on' if present, 'of' if absent.
CT1 on A4
CT1: cassette paper sensor (P103); 'on' paper present, 'of' paper absent.
MLT on A4 TN on
JAM of
MLT:manual feed tray paper sensor (PS4); 'on' paper present, 'of' paper absent.
TN: not used.
JAM: not used.
Description
Executes an operation test on the
ESS function.
F-15-21
Chapter 15
15-67